Firstly, congrats on the realization.
Reading your post brought me back to my own epiphany moment. Its such a weird feeling, realizing you never really questioned why you were you. Just was because you were.
Im glad you found who you wanted to be.
As someone who "boy-moded" for a while, just make sure you have an outlet to be your true self. It gets old, keeping the mask on for the sake of others.
One thing I did as an inbetween was started going by simply "T" at work. Although that only worked because my old and new names shared it.
Nothing against going with a completely new name of course, but being able to maintain initials is a surprisingly nice perk.